iSpringRCC1UP 6-Stage 100 GPD Under Sink Reverse Osmosis Drinking Water Filtration System with Booster Pump and UV Ultraviolet Filter, Patented Top-Mounted Faucet Design for Easy Installation

Been using the 6-stage system for a few weeks now and wanted to use it while before giving my review.So far this is a great system and the water quality is fantastic. I had an older 5 stage permeate pump setup that I was very happy with which sat stagnant for the better part of 2 years while I was renovating my house. Didn't want to deal with the headaches of sterilizing the entire setup and always worried that germs remained in the system especially after the RO stage. I also wanted to move my system to a dead space away from my sink so that I could free up space under the sink as well as improve access for future filter changes. This would require me to replace most of the tubing on my old system so buying a new one wasn't a terrible decision.I have City-treated water so the UV stage really wasn't necessary. While I'm using it now, I'll likely cut the power to the UV to save bulb life and use it whenever I feel like it. I have low water pressure however and was hoping to see a noticeable improvement in water flow but it is comparable to my old permeate pump setup which really wasn't all that bad. I'm getting 1 liter of water in 31.67 seconds (exactly 1/2 gallon per minute). The literature states that the pump reduces the waste water to around 2 gallons per 1 gallon of drinking water which in my opinion is way way way too much but better than permeate pump and way better than straight RO setups. A lot of people complain about the permeate pumps making too much noise but the occasional clicking sound never really bothered me. The pump is still audible but quieter and is in operation for less time than the permeate pump does.Connecting the system wasn't too bad. It's packaged well but the instructions seemed to be more for their 5 stage setups. The UV stuff was separate from everything else which was annoying but you can reasonably figure things out. Appreciate the use of push-in connectors with retaining clips none of which leaked when I first fired up the system (amazing given the countless number of connections). The water supply tap/adapter is really slick too. I had to buy an extra 25 feet of tubing because I moved the filter assembly several feet away from the faucet and tank (buy the refrigerator kit which was reasonably priced and had spare connectors) so I couldn't use the thoughtful color coded tubing. By the way, I didn't see it in the listing but the system includes a battery operated leak detector to mount near the system. This was a cool touch that helps relieve the anxiety of worrying about water leaks over time (will be buying a few more for my other sinks).The water taste great by the way. Some may argue that it can be too flat since all the minerals were stripped out but I like it. On my next filter change, I may opt to use one of those alkaline/mineral filters in place of the current 6th stage final filter. Not a big deal though.Note that the instructions didn't mention anything about clearing carbon fines and the preservatives used in the RO the first time you use (or change) the filters. I keep a long piece of extra tubing which I connect first to the "out" port of stage 3 (run water until it's clear), reconnect and then move the tubing to the "out" port of the RO filter (run a couple gallons), reconnect and then run a couple more gallons from the faucet to clear the final filter. If you don't do this, you run the chance of clogging your RO (or drinking the chemicals packaged in the RO membrane).I very much recommend this system but will reserve final judgement until I use it for at least a year and go through a filter change. Will update this post if necessary.

I have had this filter installed since mid April 2017 and I love it so far.Water quality:Better than advertised. To me good water tastes like nothing and that is exactly what this filter delivers. My incoming city water is about 440ppm and after three months I am still getting 14-16ppm out of this system. I run this water through my coffee maker every day and have absolutely no scale build up. I have not tested the flow rate but it is about what I would expect. I usually fill 64oz at a time and I believe it takes over a minute. Also for me the unit is installed in the basement so I have a much longer tube going from the filter tank to the tap.Quality:So far I have not had any issues with quality. The overall feel is better than I expected. The housings of the first three filters are solid and thick so I am sure they will last. All of the fittings feel okay however they are plastic but at the pressures the unit runs at I don't see that being an issue. The switch that controls the uv filter is spot on. The second you open the tap the uv light comes on and when you close tap the light goes right back out. Because of that the water coming out is not warm. The pump runs very quiet and turns on and off when it needs to.Install:My install experience may not be too much help because I installed my unit on a stand in the basement so it was a little more involved. I do not think it would be too hard to install with a typical under sink method. Most of the unit is assembled when it arrives so ther is not much worry there. I would say that the a person would have to be moderately handy to get the job done. If you do go with under the sink then plan on loosing about half the room under the sink.

To begin I have had now three RO systems in my house for 20 years. I really like them, and do not want to add calcium for taste. It works very well as a replacement for distilled water. I use it in a CPAP machine. The first two were the Watts Premier from Costco. Those were very nice to live with. I bought the iSpring to upgrade from a four stage to a 7 stage to:Replace the leaky faucet I could not repair.Get less expensive filters for replacement.Get greater volume.Produce less waste water, for a house septic system.Microbe protection for well water.This looks like it was made with high quality components. It is said to be effective, with rating, and looks like the components are three times the capacity of the prior quick connect type. All this is good.What is obvious to me is that this was designed to be a four stage, under sink filter system. Then someone had a great idea, and decided to add a pump which weighs a lot and requires electricity. Heck let’s add a UV. The added weight and size was not reengineered. This added electrical demands, that most under sink outlets to do not have. This unit now weighs twice as much with power wires, and tiny control wires, and tubes now going everywhere, out the front and not the back, with snap on holders that may or may not hold the component, and then additional snap on component making a chain of snap on connectors each dependent on first.. The engineers probably said we do not know if that will work for the customer. Marketing said that’s ok, let’s not solve that problem, we will not address the issue, and tell the customer they can solve this anyway they want to.If that were possible I would build my own system, and not buy this at all.All I can say is good luck with the electric wiring, it is up to you. Good luck on finding a wall that can support the weight and leverage needed to change the filters. You should solve this problem before deciding to buy. And there is not enough information provided to allow you to plan this. The control wires are tiny fragile wires with no quick disconnect that are too short to place the control box any where near the electrical outlet. One wire power wire is twice as long as the other, but they are going to the same outlet.All of this makes it too heavy to be supported by the designed bracket, so they recommend you put it on something to support it. No design, no instructions.Then there is included a leak stop valve. Thank you, but no instructions on where to place it, nor how to use it. You must call support, I guess.So back to the choice I made. The watts system is a light weight quick disconnect home owner system. This iSpring appears to more industrial, with old school heavy well made and more durable components. They are marketed to the same customer and made to look the same in pictures. They are not, especially with the seven stages, and marketing needs to admit it. If I were engineering this to still get it under the sink I would divide it into two parts. The permanent elements to be placed on the back wall near the electrical outlet. Then the change out filters properly supported to be changed traditionally placed. That will take weight off the unit, and make it more intuitive to the customer.